steam_reduction Namespace Reference

Steam reduction calculations for treasure hunt measures. More...

Classes
struct	FlowMeterMethodData
	Input data for the flow meter measurement method. More...
struct	MassFlowMeasuredData
	Input data for field-measured mass flow. More...
struct	MassFlowMethodData
	Input data for the air or water mass flow measurement method. More...
struct	MassFlowNameplateData
	Input data for nameplate-based mass flow measurement. More...
struct	OffsheetMethodData
	Input data for the offsheet (direct consumption) measurement method. More...
struct	SteamReductionInput
	Input data for a single steam reduction measure. More...
struct	SteamReductionOutput
	Output data for a steam reduction calculation. More...

Enumerations
enum class	SteamMeasurementMethod { kFlowMeter = 0 , kAirMassFlow = 1 , kWaterMassFlow = 2 , kOffsheet = 3 }
enum class	UtilityType { kSteam = 0 , kNaturalGas = 1 , kOther = 2 }

Functions
SteamReductionOutput	steamReduction (const std::vector< SteamReductionInput > &input_vec)
	Calculates total annual steam use, energy use, and energy cost for a collection of steam reduction measures.
SteamReductionOutput	flowMeterReduction (const FlowMeterMethodData &data, int hours_per_year, double system_efficiency, int units, double boiler_efficiency, double change_enthalpy)
	Calculates steam use and energy use using the flow meter method.
SteamReductionOutput	airMassFlowReduction (const MassFlowMethodData &data, int hours_per_year, double system_efficiency, int units, double boiler_efficiency, double change_enthalpy)
	Calculates steam use and energy use using the air mass flow method.
SteamReductionOutput	waterMassFlowReduction (const MassFlowMethodData &data, int hours_per_year, double system_efficiency, int units, double boiler_efficiency, double change_enthalpy)
	Calculates steam use and energy use using the water mass flow method.
SteamReductionOutput	offsheetReduction (const OffsheetMethodData &data, double boiler_efficiency, double change_enthalpy)
	Calculates steam use and energy use using the offsheet (direct consumption) method.
double	calculateChangeEnthalpy (double pressure, SteamProperties::ThermodynamicQuantity steam_variable_option, double steam_variable, double feed_water_temperature)
	Calculates the enthalpy difference between steam at the given conditions and feedwater.

Detailed Description

Provides a function-based API for estimating annual steam use, energy use, and energy cost for steam reduction measures identified during an energy treasure hunt. Supports four measurement methods: flow meter, air mass flow, water mass flow, and offsheet.

See also

Steam Reduction Calculator

Enumeration Type Documentation

SteamMeasurementMethod

enum class steam_reduction::SteamMeasurementMethod

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Enumerator
kFlowMeter	Flow meter method — uses a direct steam or water flow meter reading.
kAirMassFlow	Air mass flow method — derives steam use from air flow and temperature rise.
kWaterMassFlow	Water mass flow method — derives steam use from water flow and temperature rise.
kOffsheet	Offsheet method — uses a directly supplied energy consumption value.

Definition at line 31 of file steam_reduction.h.

UtilityType

enum class steam_reduction::UtilityType

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Enumerator
kSteam	Steam utility — energy cost is based on steam use \([\unit{kg\per\year}]\).
kNaturalGas	Natural gas utility — energy cost is based on energy use \([\unit{kJ\per\year}]\).
kOther	Other utility — energy cost is based on energy use \([\unit{kJ\per\year}]\).

Definition at line 44 of file steam_reduction.h.